Just had a new Pentair fans de filter installed. When I add DE after backwashing, there is an initial cloud of DE that flows back into the pool through my return lines upon start up.
I questioned the pool store who applied and installed the unit, and they state that I must have added too much DE.
One of the reasons I purchased a new filter was because the old one did the same thing, even after installing new grids.
I am otherwise happy with the new filter as it replaced a forty year old dinosaur. Things today are much advanced.
However, this explanation regarding DE re-entering my pool does not make sense to me as I have always thought that the only path back to the pool would have to be through the filter grids if they are in good condition.
I would think that, at most, too much DE might raise the filters operating pressure or possibly clog the grids, but can't imagine how a filter could text excess DE and route that excess to my return lines.
Your thoughts would be appreciated.
Caruso
I questioned the pool store who applied and installed the unit, and they state that I must have added too much DE.
One of the reasons I purchased a new filter was because the old one did the same thing, even after installing new grids.
I am otherwise happy with the new filter as it replaced a forty year old dinosaur. Things today are much advanced.
However, this explanation regarding DE re-entering my pool does not make sense to me as I have always thought that the only path back to the pool would have to be through the filter grids if they are in good condition.
I would think that, at most, too much DE might raise the filters operating pressure or possibly clog the grids, but can't imagine how a filter could text excess DE and route that excess to my return lines.
Your thoughts would be appreciated.
Caruso